YENİÇERİ ANTICHEAT

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|_|\___|_||_|_|_\__\___|_| |_| v2.0.0
Professional, Modular AntiCheat for Modern Minecraft

Yeniçeri AntiCheat is a high-performance, modular, and dependency-free AntiCheat plugin built from the ground up for modern Minecraft ( Paper / Purpur / Spigot 1.21.x). Tailored specifically for Towny, SMP, Survival, and PvP environments, it prioritizes an exceptionally low false-positive rate, intelligent ping compensation, and progressive evidence-based escalation.


Key Features

• ⚡ Zero External Dependencies: No need for ProtocolLib, PacketEvents, or native inject hooks. Runs natively on Paper / Purpur 1.21.x APIs with blazing-fast performance.
• Towny & Survival Native Integration:
  • Dynamic Teleport Grace Period (2500ms) to prevent false flags after /t spawn, /spawn, /home, or portal transitions.
  • Native recognition of Towny town flight (/t fly) and server-allowed flight permissions.
  • Smart mining & interaction tracking eliminating false positives during obsidian/deepslate mining.
• ⚖️ Dynamic Ping & TPS Lag Compensation: Scales reach distance thresholds and movement buffer additions based on live player ping (ms) and server tick health (TPS). Lagging players are never falsely punished.
• Invariant Anomaly Engine: Continuously verifies environmental and physical laws (Fall Damage Invariants, Fire/Lava GodMode, Cobweb/Water slowdown enforcement).
• Emergent.sh AI Integration (Optional & Low-Cost): Before executing automated bans on repeat offenders, telemetry data can be asynchronously audited by a low-token LLM for a second opinion.
• ️ Asynchronous SQLite Database: Every flag is asynchronously saved to logs.db with detailed telemetry (timestamp, coordinates, world, check, VL, ping, TPS, and debug tags).
• Progressive Escalation System: Buffer ➔ Violation Level (VL) ➔ Kick ➔ Timed/Permanent Ban. Evidence is gathered methodically before taking punitive action.
• Skript & PlaceholderAPI Support: Features a custom cancellable YeniceriFlagEvent for Skript/Java developers and native PAPI placeholders (%yeniceri_vl%, %yeniceri_ping%, %yeniceri_cps%, %yeniceri_alerts%).
• ️ Dynamic Bypass & Live Test System: OP players are monitored by default so admins can test hacks directly. Granular in-game management via /yeniceri bypass add/remove/custom allows instant whitelisting per player or per specific check.

Detection Modules

⚔️ Combat Checks

• KillAura / Aura: Detects impossible attack angles, FOV violations (>85°), and inhuman target-switching speeds (<60ms).
• Reach: Dynamic ping-compensated distance validation beyond vanilla 3.0 blocks.
• AutoClicker: Analyzes high burst CPS (>18-22), zero-delay consecutive clicks, and standard deviation anomalies.
• Aimbot / AimAssist: Flags unnatural rotational snaps, smooth aim assistance, and abnormal pitch/yaw accelerations.
• Velocity / AntiKnockback: Catches players ignoring vertical or horizontal knockback momentum.
• Criticals: Detects ground-spoofed packet criticals and micro-jump exploits during attacks.
• FastAttack: Detects weapon cooldown bypasses and 1.8-style attack packet spam.
• FastBow & FastProjectile: Prevents instant bow release exploits and modified projectile velocity.
• HitBox: Detects interactions with expanded entity hitboxes.
• BackTrack: Blocks hitting lingering historical entity positions from previous ticks.
• MultiAura: Flags damaging multiple targets in the exact same tick.
• BadPackets: Catches impossible pitch rotations (>90° / <-90°) and corrupted packet structures.

Movement Checks

• Flight: Detects hovering in mid-air, ascending without velocity, and survival isFlying packet exploits.
• Speed: Prevents horizontal ground/air speeds exceeding vanilla momentum limits.
• NoFall: Detects spoofed onGround packets while falling and fall distance reset packets.
• Jesus / WaterWalk: Catches walking on water or lava as solid blocks without Frost Walker.
• AirJump: Flags applying jump velocity (+0.42) while already in mid-air.
• BunnyHop: Identifies momentum preservation exploits across repeated jump sequences.
• Step: Catches jumping up full blocks instantaneously without stepping delays.
• Spider: Detects climbing vertical walls without ladders, vines, or scaffolding.
• Phase & Clip: Prevents pushing or phasing through solid blocks and closed doors.
• Glide: Catches constant slow falling without Elytra or Slow Falling status effects.
• FastFall: Detects accelerating downwards faster than terminal gravity.
• FastLadder: Prevents climbing climbable blocks faster than vanilla speed.
• Timer: Catches game speed modification and packet over-generation.
• Blink: Detects choked movement packets followed by sudden burst movement.
• FoodSprint: Blocks sprinting with an empty hunger bar or while actively consuming food.
• GroundSpoof: Detects client/server ground state desynchronization.
• Elytra & EntitySpeed: Enforces maximum allowed velocity limits for elytra and ridden vehicles/mounts.

World & Mining Checks

• FastBreak: Validates tool break speeds and prevents insta-break hacks.
• FastPlace: Prevents placing blocks faster than vanilla click limits.
• Scaffold & Tower: Detects abnormal backwards bridging angles and vertical block towering.
• BlockReach: Flags interacting with blocks beyond legitimate survival reach distances.
• GhostHand: Catches breaking or placing blocks through solid walls.
• BedFucker / BedAura: Detects destroying beds without line-of-sight or raytrace alignment.
• XRay Statistical Engine: Tracks hidden ore break ratios to identify uncharacteristic mining patterns.
• LiquidInteract: Prevents interacting with blocks obstructed by lava/water.

Player & Misc Checks

• InventoryMove: Flags walking, jumping, or sprinting while maintaining an open inventory or container.
• ChestStealer: Detects looting container slots at impossible, inhuman speeds (0ms delays).
• AutoArmor: Prevents equipping armor mid-air, while sprinting, or without opening inventory.
• NoSwing: Catches attacking entities or breaking blocks without sending arm swing packets.
• AutoRespawn: Detects instant client respawn packets bypassing the death screen.
• FastEat & FastHeal: Flags reduced item consumption or abnormal health regeneration intervals.
• AutoLoot & ExtraInventory: Blocks clicking invalid slots or unauthorized crafting grids.
  
  Commands & Permissions
  Primary command: /anticheat (Aliases: /ac, /yeniceri)
  
  Command Permission Description
  /ac alerts [on|off] yeniceri.anticheat.bildiriler Toggle staff cheat violation alerts in chat.
  /ac info <player> yeniceri.anticheat.admin View player ping, total VL, kicks, and bypass state.
  /ac violations <player> yeniceri.anticheat.admin Query recent violation logs stored in the SQLite database.
  /ac reset <player> yeniceri.anticheat.admin Reset all accumulated violations and kick counters for a player.
  /ac bypass add <player> yeniceri.anticheat.admin Completely exempt a player from all AntiCheat checks.
  /ac bypass remove <player> [check] yeniceri.anticheat.admin Remove total or specific check bypass for a player.
  /ac bypass custom <player> <check> yeniceri.anticheat.admin Bypass only a specific check (e.g. nofall, flight) for testing.
  /ac reload yeniceri.anticheat.admin Reload config.yml and all check configurations.
  /ac status yeniceri.anticheat.admin View server TPS, registered checks count, and overall health.
  Full Tab-Completion is supported across all commands